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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A226020 Composite squarefree numbers n such that the ratio (n + 1/2)/(p(i) + 1/2) is an integer, where p(i) are the prime factors of n.

Table of values

n a(n)
1 13702
2 42997
3 1004062
4 1684462
5 38447662
6 40243549
7 70801087
8 107728582
9 409055062
10 594021862
11 760767262
12 1045475437
13 1104435202
14 1471700587
15 1686747562
16 1920806662
17 3136180162
18 3469071937
19 5291041297
20 7239716347
21 7903353667
22 12738885862
23 22711489762

List of values

[13702, 42997, 1004062, 1684462, 38447662, 40243549, 70801087, 107728582, 409055062, 594021862, 760767262, 1045475437, 1104435202, 1471700587, 1686747562, 1920806662, 3136180162, 3469071937, 5291041297, 7239716347, 7903353667, 12738885862, 22711489762]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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